just ordered 4 desno ik22 plugs from
sales@itbmotorsports.com for $9.95+ $5.75 shipping.
looks like a pretty good deal.
running 19% want to play it safe.just 1step colder.
doug

 

$9.95, per plug? Not even Jeg's sells 'em for that cheap

 

surprised me too. check it out .
1-888-346-7266
doug

 

Great price! thanks for sharing.
Do you happen to know the NGK matching heat range?

 

Guys in Aichi Prefecture are crying about that name...

 

Don't you mean LTB Motor Sport?

http://www.ltbmotorsport.com/densoik165303.html

 

That is a heck of a good price, thanks for the heads up .

 

Hello everyone,
I was just wondering about the difference between IK20 and IK22, I know that IK22's are colder but if this makes such a difference then why wouldnt anyone get IK24 or IK27... Whats the downside to too cold of a plug? Just gathering some information.. Thanks
Jm

 

Too cold a plug will fowl easier at low RPMs and also when motor is cold like on start up. Back in the day, I use to start my F Production 1275cc MG-Midget on stock N9Y plugs in the morning. After warm-up, put in the colder racing plugs and I'd be good until the next morning. If I tried to start on the racing plugs, I'd fowl at least one plug every time.

 

Jm,

I've been running IK-27's, using the stock MINI 0.065" electrode gap, for 1 year and over 10,000 miles in my MCS here in the Pacific Northwest, without problems. Your theory is correct. I chose to use these cold plugs to reduce, any way I can, detonation under load in my 19% pulley'd car. Also using an Alta Intercooler as part of the anti-detonation prevention measures. Have also tried IK-31's, colder yet, without problems. Went back to the IK-27's simply because the electrodes of the IK-27's extend further into the combustion chamber than the IK-31's. Didn't want to disrupt the BMW engineered combustion chamber dynamics. The IK-31's seemed to work fine and didn't foul.
Stories like those recounted by Apexer are certainly true and come from the old days, with old technology engine management systems.
Try the colder plugs especially if you run your engine in situations that are high risk for detonation: high ambient temperatures, high speed high gear operation, manifold pressure above stock values.

Regards,
John Petrich in Seattle

 

I read up on the FAQ's on Denso Iridium's website. Here is an interesting find:

The past few days my car has had a problem with going into limp-mode (throwing a CEL and EML, but, of course, NO CODE, grrr!) if I sharply step off the throttle from a high throttle angle. Baffled, I started looking at the basics to see what the matter was. After ruling out fuel and engine management, I started looking at the ignition system. Turns out my #2 spark plug had either broken off or worn down the Iridium electrode. The picture shows the #1 and #2 cylinder spark plugs; you can clearly see the electrode gone on #2.



I had this set of Denso Iridium IK22's in my MCS for 25,600 miles. The #4 plug electrode was also slightly rounded, but not gone like the #2. After swapping in a set of stock Bosch +4 plugs I had laying around, the misfiring problem went away (as well as some throttle response, as downshifting is more tedious now).

I plan on getting another set of Denso's, however now I know that they need more frequent replacement than I assumed earlier.

Just a heads up for those that didn't know. This is still an excellent performing spark plug!

Cheers,
Ryan

 

this is good info! and considering that Randy Webb sells these things for $65!!!!!!!!(4) and recommends they be considered as a 50k plug! comments Randy?

 

Thanks for answering my questions guys :D

Jm

 

Ryan,

Rather surprising electrode erosion in #2 cylinder, assuming all the remaining plugs have eroded similar to the spark plug from #4 cylinder. Wonder what is going on in cylinder #2.
Do agree that we should change our plugs at a lower mileage than we might assume from the advertising claims. I feel that the Iridium electrodes and the resultant electrode changes that are possible with that alloy make for a significant advance in ignition performance. Hope that people don't back away from the Iridium plugs thinking that there is something "better" out there when there isn't, at least now.

Happiest of New Years to all,
John Petrich in Seattle

 

$9.95 per plug is great.
Too bad the cheapest shipping option for me is $27.86 for 2nd day air!

I didn't think four plugs were that "heavy".
Maybe they could toss in a tire or two for the same price.

I had an idea to increase the number of plugs ordered but-
8 plugs cost $36.56 to ship and 12 plugs are $46 to ship.

This is the cheap shipping too. Next day air is $47.52 for 4 plugs.
Maybe I'll just fly out there to pick them up in person and go on vacation at the same time.

Or I could buy more than $50 worth of plugs and ship it to one of you (mainlanders) for free and pay you to drop it off at USPS and send it for $6 to me. Anyone coming to Hawaii in the next 6 months?

 

Hope you dont mind if i ask but where can i get them and which one is best the ik-22's?

 

minihune,

I will check on the regular shipping price and if it is a better deal I can buy some and then re-ship them to you.

I will go to the post office and check on the price through them and send you a pm. Let me know if your interested. They give free shipping to me.

Earl

 

Based on the condition of the plugs, my #2 cylinder isn't acting any different than the rest (you can see how clean the plugs are) Either the plug in my #2 was just used up, or perhaps a mechanical failure of the plug. Nevertheless, Petrich is right, this is still the best performance plug for our cars that we've found, we'll just have to replace 'em every 25-30k miles.

 

Thanks, I just ordered 4 plugs myself. I also purchased the Motul Brake fluid because over $50 shipping is free, and I was gonna buy it eventually anyways.